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A. SWEETLAND.

CURTAIN FIXTURE.

No. 296,712. I Patented Apr. 8, 1884.

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ALVAH SXVEETLAND, OF SYRACUSE, SEW YORK.

CURTAIN -FIXTUREY.

SPECIFICATION forming part of Letters Patent No. 296,712, dated April 8, 188%.

Application filed September 515, i883. (No model.)

cross scction of the roller on the line L; Fig.

6, a section of the roller tail-piece.

My invention relates to that class of curtainfixtures known as spring-rollers, and has reference to the means for stopping the rotation of the roller at desired points, to, the

, brackets for supporting the roller, and to the devices for connecting the roller to or mounting it upon the brackets.

It consists in the several features hereinafter described, and. specifically set forth in the claims.

Like letters refer to like parts in all the figures.

A represents a curtain-roller of that class which is provided with an internal spiral spring secured at one end to the roller and at the other to the spindle B, which is loosely connected to the roller, and prevented from rotating by the bracket 6. The collar 1) maintains the spindle and the roller relatively concentric. The roller and spring, being of the usual construction, require no further descrip tion.

The spindie B is constructed, in this instance, with longitudinal V-shaped grooves a a on opposite sides, extending the whole length of the hub 93, up to the shoulder b; or one groove may be used instead of two. On one side of the groove the hub in is flattened, as at c.

D is the head of the spindle, constructed of a semi-spherical general form, (shown in the drawings,) the flat side being on a line with the longitudinal center line of the spindle. Through this head is a hole, a, perpendicular to the flat side. The collar E is bored, as at d, to receive the bolts m m. The line of one side of each of these bores is tangential to the periphery of the hub of the spindle, and also to the circumference of the spindle'hole in each of these bores opens into the spindlehole, and through them each of the bolts, at a certain point in the revolution of the roller, projects sufficiently to enter the groove a. in the spindle, and so that the edge of this groove will bite into the side of the bolt and lock the roller. A metallic cap or ferrule, i, of usual collar E, and the ends of the bores or boltseats d, and retains the bolts m in the bores. These bolts fit loosely therein, so that they will slide easily.

The bracket C is constructed with a base, a screw, F, cast into the base, a stem, y, and studs 0 0, one on each side, upon and at right angles to the stern, as shown in the drawings. Each of these studs is constructed with a sh oulder, 1".

H is the tail-bracket, constructed the same as the bracket 0 as to the base and screw and cylindrical studs, 0 0, one on each side, and another, 8, on the top.

N is the tail-piece upon the roller A, constructed with an outer central raised portion, in which is a cylindrical recess, 2, of such size as to freely receive either one of the studs 0 s on the bracket H. The hole a in the head D of the spindle is of such size as to pass the head over the shoulders r upon the studs 0 on the bracket C, the shoulder preventing the head from slipping or twisting off from the stud.

y In the construction of spring-rollers, devices dependent upon centrifugal motion have been employed as stops, and said motion has been given to the curtain. So, in this instance, the centrifugal motion tends to throw the bolts anoutward with the rapid revolution of the roller; and when said revolution is slowed down sufficiently one of said bol ts approaches the spin tile, and its lower end drops in the groove a, until it rests, or nearly rests, against the side of the groove opposite to the bolt entrance. By the time the bolt has reached this point the then upper side or edge of the groove comes in contact with and bites against the bolt,

the collar, and their sides are parallel, and

construction, covers the circumference of the stem, except that the stem carries two plain governed by the rapidity of ascent or descent crowding it against the walls of the bolt-hole, and the roller is locked. A reverse movement of the roller releases the bolt, and the lower face of the groove shoves it back part way, and the flattened space 0 assists by wedging and lifting it back thercmainder of the distance until it is clear. The brackets O H are set up by simply screwing the screw F into the casing or jamb of the window. The drawings show the roller mounted upon the casings. WVhen the roller is to be set up between the jambs of the window, then the stud s will fit into the recess t in the tail-piece N, the spindle-head D fitting upon one of the studs 0 on the bracket 0, the stems of the brackets being in line with the roller and not at right angles to it.

I can construct the tail-piece N with a projecting stud in place of the recess 15, and by squaring off the spindle-head the roller can be used upon any ordinary bracket. I can also drill holes through the stem of the bracket H,

. to take the place of the stud o s, to adapt it to be used with a tail-piece having a projecting stud.

I disclaim the following matter, herein shown and described, viz: In a curtain-roller, the end plate having grooves or recesses, one wall of each being radial and the other parallel thereto, and terminating in a shoulder, and with two locking-pieces reciprocating in said recesses,to engage or disengage from the vertical recess of the spindle.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination of a roller-spindle having a groove and an adjacent flat surface, and

a bolt carried by aroller for locking the same by contact with the groove and the bite of the edge of the groove upon the locking-bolt, substantially as and for the purpose set forth.

2. The combination of the spindle provided with the groove a and adjacent flat surface 0, the collar E, and bolts m, substantially as shown and described.

3. The combination of the spring-roller A,

spindle B, collar E, bolts m, and ferrule i, the spindle and collar being constructed and operating to bite the bolt with the edges of the groove, substantially as specified.

4. The head-bracket G, constructed with a base-screw, F, stem 4 and studs 0, provided with a shoulder, r, substantially as shown and described.

5. A roller-spindle constructed with hub at, having therein a groove, a, and adjacent flat surface 0, a shoulder Z), and a semi-spherical head, D, having a hole, a, through it, by which the spindle is connected to the bracket and prevented from revolving, substantially as shown and described.

6. The tail-bracket H, constructed with basescrews F, stem y, and studs 0 s, substantially as shown and described.

7. A curtain-fixture consisting of the roller A, spindle B, collar E, bolt-seats d, and bolts' m, engaging with the groove a and flat surface 0 of the spindle, the spindle-head D, bracket 0, tail-piece N, and bracket H, constructed and operated together, substantially as and for the purposes specified.

8. The spindle B, provided with a head, D,

ALVAH SIVEETLAND.

In presence of- 0. WV. SMITH, v S. BRooKs BAcoN. 

